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Finding the Fourth Proportional to 72,915.30, 109,372.95 and 59,793.30

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Solution

The fourth proportional to 72,915.30, 109,372.95 and 59,793.30 is: 89,689.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,915.30 : 109,372.95 = 59,793.30 : x
  2. Step 2: Convert to fraction form
    72,915.30/109,372.95 = 59,793.30/x
  3. Step 3: Cross multiply
    72,915.30x = 109,372.95 × 59,793.30
  4. Step 4: Simplify right side
    72,915.30x = 6,539,769,611.24
  5. Step 5: Solve for x
    x = 6,539,769,611.24/72,915.30
  6. Step 6: Final answer
    x = 89,689.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.